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<div class="moz-cite-prefix">On 01/03/2017 06:44 PM, Omer Aldemir
wrote:<br>
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<div>Thanks for the answers i think open network type is not
available yet on the version that comes with rhel7<br>
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<br>
Actually it is in RHEL 7.3. Although the feature is in upstream
libvirt only starting in version 2.2.0, and RHEL7.3 libvirt is based
on libvirt 2.0.0, certain patches are backported into RHEL packages
based on severity of bug vs. potential for introducing regressions
vs. customer demand. This particular patch was backported into
RHEL7.3 for <a class="moz-txt-link-freetext" href="https://bugzilla.redhat.com/846810">https://bugzilla.redhat.com/846810</a><br>
<br>
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On 3 Jan 2017, at 22:06, Laine Stump <<a
moz-do-not-send="true" href="mailto:laine@laine.org">laine@laine.org</a>>
wrote:<br>
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<div class="moz-cite-prefix">On 12/22/2016 09:48 AM, Omer
Aldemir wrote:<br>
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<p>Hello,</p>
<p><br>
</p>
<p>I am trying to understand how libvirt firewall rules
are loaded as I have firewalld and iptables services are
disabled.</p>
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<br>
libvirt will add its iptables rules via firewalld if firewalld
is enabled and running, otherwise it executes iptables
commands directly.<br>
<br>
w<br>
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<p><br>
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<p>Where is the configuration files for firewall and NAT
rules for libvirt?</p>
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<br>
There are no configuration files for the iptables rules that
libvirt adds. The simple set of rules that is added is fixed
for each type of libvirt network - NAT, routed, and isolated.
Here is a description of exactly what is added for each of
these types of network:<br>
<br>
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://libvirt.org/firewall.html">https://libvirt.org/firewall.html</a><br>
<br>
(actually I just realized that I forgot to add information
there about a new network forwarding type I recently added -
"open", which doesn't add *any* iptables rules - this is
intended for those who want to do their own iptables setup for
libvirt networks, outside of libvirt.)<br>
<br>
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<p>How can I load default firewall rules if I mess things
up</p>
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<br>
To reload all the iptables rules for all active libvirt
networks, just restart the libvirtd service.<br>
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<p>Also I have realized that followings is default </p>
<p><br>
</p>
<p><span>ACCEPT all -- 0.0.0.0/0
192.168.122.0/24 ctstate RELATED,ESTABLISHED</span></p>
<p><span><br>
</span></p>
<p><span>but If I am to forward a port for a real IP to
internal guest machine I need
</span></p>
<p><span><br>
</span></p>
<p><span><span>ACCEPT all -- 0.0.0.0/0
192.168.122.0/24 state NEW,RELATED,ESTABLISHED</span></span></p>
<p><span><br>
</span></p>
<p><span>(NEW state is required) and also of course a
forwarding rule</span></p>
<p><span><br>
</span></p>
<p><span><span>iptables -t nat -I PREROUTING -p tcp
--dport 3389 -j DNAT --to-destination
192.168.122.16:3389</span></span></p>
<p><span><br>
</span></p>
<p><span>Is there a place I can make this rules static
with LibVirt (not playing with firewalld and/or
iptables service for Centos 7)</span></p>
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<br>
The best that can be done with current libvirt is to create a
"hook" script similar to the one described here:<br>
<br>
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://wiki.libvirt.org/page/Networking#Forwarding_Incoming_Connections">https://wiki.libvirt.org/page/Networking#Forwarding_Incoming_Connections</a><br>
<br>
(That worked the last time I tried it, but that was at least 3
years ago. The python script available as a link from that
page is newer and promises to be easier to understand (maybe))<br>
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